======================== unified (from filesystem) ========================
                                         'bitrate'  '236.821'
                                        'duration'  '139'
                                          'artist'  'Ton Koopman'
                                     'text_people'  'Buxtehude'
                                         'release'  'Opera Omnia I - Buxtehude: Harpsichord works I'
                                           'title'  "41 Suite for Harpsichord no 6 in D minor, BuxWV 233, Allemande d'amour"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['baroque', 'bach', 'organ', 'classical', 'dietrich buxtehude']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '134.5'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Opera Omnia I - Buxtehude: Harpsichord works I'
'TBPM' (BPM (beats per minute))                     '134.5'
'TCOM' (Composer)                                   'Buxtehude'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         "41 Suite for Harpsichord no 6 in D minor, BuxWV 233, Allemande d'amour"
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ton Koopman'
'TPE2' (Band/orchestra/accompaniment)               'Ton Koopman'
'TPOS' (Part of a set)                              '1/2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['baroque', 'bach', 'organ', 'classical', 'dietrich buxtehude']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.667344'

========================== row from database ==========================
                                              'id'  1519241
                                            'path'  /data/Music/Bulk/00instruments-classical/Ton Koopman/Opera Omnia I - Buxtehude_ Harpsichord works I/41 Suite for Harpsichord no 6 in D minor, BuxWV 233, Allemande d_amour.mp3
                                         'working'  None
                                         'bitrate'  236
                                    'duration_sec'  139
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4126719
                                           'mtime'  1620561853
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Buxtehude_ d_amour prerock classical classical instruments
                                      'tag_artist'  Ton Koopman
                                     'tag_release'  Opera Omnia I - Buxtehude: Harpsichord works I
                                       'tag_title'  41 Suite for Harpsichord no 6 in D minor, BuxWV 233, Allemande d'amour
                                             'bpm'  134.5
                                    'search_title'  '233':12,13 '41':1 '6':6 'allemande':14 'amour':16 'bux':18 'buxwv':11 'd':8,15 'damour':17 'for':3 'harpsichord':4 'in':7 'minor':9,10 'no':5 'suite':2 'wv':19
                                   'search_artist'  'koopman':2 'ton':1
                                  'search_release'  'buxtehude':4,5 'harpsichord':6 'i':3 'omnia':2 'opera':1 'works':7
                                     'search_rest'  '00instruments':1 'amour':5 'buxtehude':3 'classical':2 'd':4 'instruments':7 'prerock':6
                                    'search_combo'  '00instruments':29 '233':12A,13A '41':1A '6':6A 'allemande':14A 'amour':16A,33 'bux':18A 'buxtehude':25C,26C,31 'buxwv':11A 'classical':30 'd':8A,15A,32 'damour':17A 'for':3A 'harpsichord':4A,27C 'i':24C 'in':7A 'instruments':35 'koopman':21B 'minor':9A,10A 'no':5A 'omnia':23C 'opera':22C 'prerock':34 'suite':2A 'ton':20B 'works':28C 'wv':19A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['baroque', 'bach', 'organ', 'classical', 'dietrich buxtehude']
                                        'tag_date'  2006
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620561853.1241148  (2021-05-09 14:04:13)
                             'size'  4126719